Log-boom



(No Model.)

G. F. SIBLEY LOG BOOM.

Patented Sept. 30

H H H shown in the accompanying drawings, in

. 3 is a sectional end view of the same, drawn likewise be within the scope of my invention.

with a railing or steadiment for those who is the use, in combination with the floating UNITED STATES GEORGE F. SIBLEY,

PATENT OFFICE.

EDWARD LEEDOM, OF SAME PLACE.

LOG-B SPECIFICATION forming part of Letters Patent No. 437,521, dated September 30, 1890.

Application filed February '7, 1890.

T0 ail whom it may concern.-

Be it known that I, GEORGE F. SIBLEY, a citizen of the United States, residing at Whitehall, in the county of Muskegon and State of Michigan, have invented certain new and useful Improvements in Log-Booms, of which the following is a specification.

My invention relates to improvements in booms for surrounding floating logs, and the object of my invention is to provide a boom that will prevent logs from escaping from it in a rough sea; also, to provide a boom that will be easy to walk upon, likewise a boom not easily turned over; also,a boom provided may walk upon it to steady themselves by. I accomplish these objects in the manner which similar letters of reference indicate like parts throughout-lithe several views.

Figure 1 is a side view of a section of the boom. Fig. 2 is a top view of-t-he same. Fig.

at the plane X X, Fig. 2. Fig. i is an enlarged broken top view of two sections of my improved boom, shown as joined together by a chain.

An important feature of my improved boom timbers commonly called a boom-body, of the upright posts A A, as when these are so applied to the boom-body as to project above it they prevent light or buoyant logs from jumping the boom when subject to the action of waves. When these post-s are so applied to the boom-body as to proj ectbelow it into the water, they serve to preventheavy logs from diving under the boom, as the upright posts when projecting down into'the water serve to make the boom tow or haul heavier in moving it about. glt'will be ap-' parent that in cases where the logs are all buoyant the upright posts might only project above the boom-body,'and this I consider would still be within the province of my invention. The construction of a boom in which the posts projected only from the under side of the boom-body I consider would A boom made, however, as here shown and described, in which the upright post-s project Serial No. 339,617- (No model.)

both above and below the boom-body, c0nstitutes the preferable construction for allclasses of logs.

A log-boom is composed, according to its length, of a greater or less number of sections. As these sections are practically alike in my improved boom, I will simply describe the construction of one section, it being understood that these sections are joined to 6o each other end to end to makethe length of boom needed. Frequently the free ends of the first and last sections of the boom are brought together, the logs being imprisoned in the loop formed by the encircling boom.

-A section of my improved boom may preferably be made by using for the boom-body three long square timbers B B B laid sideby side. Adjacent perpendicular gains are cut in the outside edge of the middle timber B and the adjoining edge of the outside timber B, these gains being for the reception, severally, of the upright posts A A, &c.,which it is desirable to hold firmly in place. A preferable construction ofthese gains is such that 7 5 the posts A A, 850., may neatly fit therein. When the two timbers B B from which the gains are out are spaced slightly apart, then the drawing of these timbers tightly together by the strong bolts or rivets F F, '&c., serves to clamp the upright posts in the gains. The planks G C, &c., are then fastened by the spikes G G, 850., to the uprightposts AA, 850. This completes a section of the boom ready for floating upon the water. Other similar sections may be made, and as many as are needed are joined together end to end by the chain D and staples 'E E, as shown in Fig. 4.

7 One essential feature of myimproved boom; body is that it shall be made broader than 0 deep, so that when floated upon the water it will always lie fiat with one of itsbroad surfaces submerged and the other not submerged, the posts A A, &c.,being fastened to the body of the boom perpendicularly. The 5 loss has been experienced from logs jumpwhereby it retains its flat position upon the ing over and diving under the boom during" Water, and perpendicularlyinclined posts rough weather. By the use of my improved thereto fixedly attached for the purpose of boom this Will be prevented, While said boom preventing the floating logs imprisoned by 5 is comparatively cheap to make and easily said boom from escaping therefrom by the ac- 15 towed. tion of the Waves, substantially as set forth. What I claim as my invention, and desire GEORGE F. SIBLEY. to secure by Letters Patent, is- Witnesses: The combination, in floating log-booms, A. T. LINDERMANN, 10 of the boom-body made broader than deep, I PAUL I. HEDGES. 

